Portable grinder stand



Aug. 23, 1932. J. SUNNEN 1,873,507

PORTABLE GRINDER STAND Filed Ju'ne 27, 1930 2 sheets-Sheet 1 Aug. 23, '1932. J, SUNEN 1,873,507

PORTABLE GRINDER STAND Filed June 27, 1950 2 Sheets-Sheet 2 lzz/e/zw dany@ ,5am/zer@ Patented Aug. 23, 1932 PonTABI-,i GRINDER STAND l- Thislinvention 'Deletes to portable stands for cylinder grinders, eleetric portable drills, andthe like. Thepresent invention is particularly 2id-apt- 5 edior use' for Asupporting portable'eleetrie drills insedto operate lcylinder grinders'V or honingmaehines,fsueh as disclosed in mycopending.applications. t Y

' This typefof :grinderis especially-usedv to 10 grind or reinish cylinders ofinternalgcomhustion engines; i Vhen'- in; use the :operating spnlle of the grinderis attached to the-chuck ofcthe.- electric ldrilll andthe grinder is oper- ;ativelyrsupported thereby; 'During the' oper- '15 ation ofthe: grindt-Er'theelectric-drillA is raised and lowered sogas fto impart to'saidzgrinder reciprocating' or longitudinal' movementy afxi iallyzof-rthe oylinlerrsrfacesun As the combined Weight of 'the drill'and o the grinder is considerable, 'itis vreadily'apmirent that s unless a.- suitable 'support iis lprovided,ftheWorkman:wllzhefhampered in his Y Workhy the: excessiveiweigiit ofi the: operating unit and Will not be able to Work inan 1efcient manner:` f

.The object ofw'the presentinvention' is to provide a support which'eicientlysupports the: drill nd grinderiin Yproper .position ivith respecttothe-hylinder softhat theworkmzin is relieved-osupporting theoperating unit and isV merel'yjcalled uponvtolguide'the same and lause: reciprocating: movement?. of' the grinl'efuxially withinfthe cylinder'. Furtherohjects 'ofthe' invention reto 'pro-A videfa supper-trof theclass descriloodhavingV standflirdI provided 'With "a vbei-'seloy means 'of Wh'ifhA said 'standard lcan 'be lrinly attached in 'proper *posit-ion :to the eyl'inderblook, the )Lipper 34end? oii'f-jsaid`l 'standnrdfheing 'provided ivitli lat'eral yzii-rm which is f alj'iistalile l:i'iooiit the'zixis offsaidstandard-wherebythe g-rinder @2in1-he: moved 'from i one 'icylinder "to the othem"v A.4:5 @ther ohjeotsof-the invention lare to pro* vide it supportwofthe class.describedhaving an adjustable base'adapted tobeinsertedinto a; supportingpositionl .Withini fr "cylinder` and which ibaseF -is adjustable `for 'different sized cylinders-v- -Still 1 further objects o @the invention: are

t@ pilividela, gimdfstmifi fiile dass de;

'scribed `havin-g :in eXpanSihleba-se ivhioh,

When-.placed the eylinder, vis antoinntiozzlly expeindeGlV `so ies to support the standA in position, .find includingsupporting means susf '55 pended in position and adapted to engage .it portable -drill-andgsnpport it and' the grinder ini proper operati-ve position, Q there "being spring ineensprovideditolperinit verticl re'- y cipro'cating movement-- of-thefoperating unit, said'spring "mea-ns. being 'adj-Listahlefto com pensate fordile'rence infweightof ',drills.-l Additional obje-cts? volf-*the invention are to provide astandard'havingfanexpansiblefoot or :base which, when 2 placed in "a ,eylinder, is 55 automaticallyexpanded therein h5;- tlie weight of i the standard sof vas f tov hold the latter in proper position; the Aupper end of said stand ard Vheilig providedwith agswivel from whieh thefdrill"andfgrinder are suspended', sai d :arm: being; adj ustable `about the axis of said standard so that cylinderson botlrside's 'offlthestandycanxbe ground --With one setting,

arid'vto provide ineens .for-locking the expan sionifioot-rigidly'in the-eylinder. i

Withthes'e andlother-'objects-inwiew, my invention consists incertain Y'novel veeituresffof construction .andy arrangement of: partsfherel -inater lmore fully: described fand 'claimedg anfd'illustrated inthe 4accompanying drawings; inwhioh Figure'l is `anle'vationiil view of my stand showing it in position in a cylinder.I f Figurel 2' is an*enlzug'gfedI detail View, lpartly in-ferossY sectioznofv4 the base or expansion'foot offthestandand* showing it 1in 'retracted Position. i j f f Vlfiguref'is 'an enlarged-vertical cross sectionfoithefupper end' ofthe standfand` show- 'ing the swivel? arm partly broken avv/fry.)y i

Figure' 4" is' af horizontal Crossseetin taken online4:-4'0Figure3 4 y f j'Figu'ren'v is .ar-:nfenlargediorosssection taken onlinela'of 'Figurel l Figure i5l is an' enlarged* Cross seotion'taken on llineelof'Fignre I. i Y v Figure 7 is an enlargedl ,horizontal `Cross section'taken on line "-J? of Figure l'. 1 l 'y Referring lhy numerals totheacoompany- 10'@ ing "dran'vngs,4 l() indicates' e standaid'11 vam noV arm extendinglaterally fromthe upper end thereof, and 12 ymeans suspended from said arm and supporting, by a strap A, a portable electric drill B to which is operatively attached a cylinder grinderC. This grinder is normally disposed above a cylinder block D vand is so supported that Vitcanloe moved into Y the cylinder which `it is desired to refinish or hone. The electric drill is of any standard construction and the grinder is preferably of the type disclosed in the before-mentioned application. 1^ y The standard consists of a tubular member 14 of suitable length and having 'its' lower end provided with a base 15y and an eXpansion foot or member 16.Vv Base 15 consists ofk a pair of kchannel vmembers 17 spaced from eachv other and 'ha-ving their upper ends cony verging and secured Yto the lower end of tubular member 14. The lower portions of members 17 are secured in-spa'ced-apar't relation by a plurality of pins'or transverse rods 18 ,which have their ends secured in saidmembers. y. Pivotally mounted on each pin 18 are '9 the rear ends 19a vof a pair of links 19, the

forward vends of'which are pivotally secured to expansion member 16 as indicated at 20.

Member '16 is preferably T-shape in cross section with the web portion 16a presented .t Vtoward base 15V and with-theends of links 19 arranged on each side ofsaid webk portion. The upper end of flanged portion 16b is bent outwardly and downwardly to'provide V`a hook21 by means of which said 'expansion member 16 can kbe hooked over thetop of the partition wall separating vtwogcylinders (see Y Figure l).

Links 19 aref-of suicient'lengthsso that' .g even when said enpansion foot occupies its outermost position the pivotal connections 2O of saidf'linksarev -disposed below vthe horizontal planes of the `respective pins 18.

Y When the expansion member 16 is retracted it occupies a lower position as shown in Figure 2. A coiled spring 22l is preferably arranged on eachnpin 18 and serves to hold the Corresponding ends of links 19 in spacedapart relation. Y a

Tubularmember 14 is of vsuitable length and the upper endV thereofis. seated in a cap" member' 24, the upper end of which is apertured as indicated at 25. A rod 26 is slidably disposed in tubula.rlmember 14 and extends beyond the ends thereof, the upper eind being threaded as indicated at 26a and vextending upwardly a suitable distance above cap 24. A knurled sleeve 27 is screw-seated on the threaded portion 26a 4and bears against the upper end of cap 24.V Thelower end of memberV 26 extends downwardly ybetween the channel members 17 and; terminates in an apertured enlargement 28. -The upper ends of a pair of connectinglinlis 29 are pivotally secured to the enlargement 28 by means of a n' pinor rivet'30.l Connecting links `29 extend downwardly and have their lower ends pivotally connected'to the web portion 16'LL of eX- pansion member 16 by means of pins or rivets n 31, preferably at a point located between the pivotal connections of the spaced pair of links 19.

To insert the base k15. in' position in fa cylinder, portion 21 is hooked overY the wall :thereof with the flange portion 16b bearingV against the wall o f the cylinder. The weight of the device causes the channel members 17 Lto drop until the outer edges thereof engage -f The arm 11 is fixed yat one end to cap Inern` ber 24 and extends horizontally therefrom and has its outer end terminating inv an upwardly presented hook 11". Cap member L24 is'loosely arranged ontheupper endof tubular Amember 14-s`o that said cap member :can 4be rotated about the aXis-of member 14. Thus the arm 11 can be adjustedinto anyradial position desired; f

The supporting means 12lis looselyvsus pendedfrom said arm'11and'canbe moved longitudinally thereof so as to 'bring the drill and the grinder in anyfposition relative to.r

the standard.

This supporting means -consists of a vertieally disposed rod 31,a -hanger.32, and a coiled tension spring 33. The upper portion 32a'of hanger 32k isbent horizontally and slidably rests on :arm 11. l AThe end of said portion is providedpwith. an aperture'34 in which rod 31 is slidably-mounted. The lower portion 321 ofhanger 32 eX- Atends downwardly and is deiected inwardly so'as to be arranged in close proximity to rod 31. The lower end of s aid portion 32b termi-Y nates in an upwardly presented fhook `35 which is engaged by theupper end-of spring 33. This spring surrounds the `lower portion of rod 31 andthe lower end of said spring enf gages a downwardly presented hook v36 fixed to said rod near the lower end'thereof. Thus said spring forms a resili'entfsupporting. connection between the hanger which is suspended from arm l1 and rod 31 vfrom which is suspended the drill B and grinder C. The drillis suspended in position Vbymeans .of

strap Afwhich is .attached vin any -suitable manner to said drill and has. afloop yportion which engages a hook 37 mounted on the llower` end @fred-31. This hook is' free to rofected by having"said` hook engage a' number ofV coilsfoi'fsa-id-spring.Av Thus byj turning said? spring in proper v1direction the number of Yturns `or 4coils of said spring (#,ngz11tgedl by said'v lhookl can be 4increased or 1 decreased as desired-so lasto increase or decrease the-ten;- sionfo'f vthespring;` Rodl extends 'a suitable distance above portion 32L Yand -is provided With `a stop' 38 spaced fa suitable 4distance vtrom 'saidsportion This stop-'is ustable 4on Vthe Yupper end of svai'drod `and controls thedownWa-rd stroke of said -rod` andthe gri-nderV C; the purpose being to Ipreventexcessive `downward movement vof the f grinder relatively to" the cylin der Lin which said lgrinder operatesa Preferably a short lsection ofcompression spring 39 vis arrangedfon rod 31 above portion 32a' and'v this spring forms-ashock ab# sorber Whenlthe st'opA 3S is brought `dovvn- Wardl'yl' Hange'r32is slidably mounted on arm 11 so that 'the supporting means 12 can be moved longitudinally of' said armA A suiiicient clearance exists between rod 31 and the vertical portion of hanger '32 immediate ly below-portion 321 topermit the supportingy means 12 Ito swingfre'ely fin position. This arnilll is of suiicientlengthfto enable `honing operation or'l allthe cylindersin one sett-ing" Withthe exception ofthe cylinder in which the base is located. The expansion featureof the base Iis automatic inV action, the Weigh'tfef the devicecausingthe Wedging of the'base in posi-tionin the cylinder", the

'tension-rod 2o and connectingflinks 29 being used merely to increase the 'pressure and'` prevent Withdrawal offthestandard' from the cylinder block. Y l v Theexpansion` foot 15 `folds closely against thev base 16 and thearm 11' and cap member 24 arewdeta'chable 'from standard 14.' `Thus the 'devicecanbe com-pactly packed for shipment and does-not require a great deal of space. Y

` TWhile thesupporting means 12 is free to swing' in any-position desiredi'it is self-aligning: so as to permit 'the operatinglunit, and particularly grinder 'C5l to assume lcoaxial relation -With'thefcylind'er fin which it operates.` The'particu'lar arrangement oi the supporting means12per1nits it to adjust it selreadily to the disposi-tion of the grinder so thatnthere is no tendency during the'op` eration of said Igrinder to deflect the'latter angularly With respect to 'the vertical axis. This sel-faligning fea-ture of the supporting means not only eliminates 4side `pullV `oni-the 'grinding' unit but insu-res eiiioient and accurate/operation of Athe grinderl It also re. "l-ieves the Workman ofthe necessityof holdn ing the l'grinder to itszvertical plane foftravel so thathis yonly dutyA is toz move the jgrinder downwardly' intothe v cylinder, against the tensioni oi spring '33,` theA lattersfcausinfg the grinder `to move upwardly. l.- f vvThe hanger 32 and rod'fflconstitute atyvo part supportingf means `for thesgrindfingiunitz, l

'saidi parts being yieldably connected together Abyimeans o the coiled springii.- The 'hangff er is arranged onv arm 11 vand, isllield'r against displacement by the upturned outer end,l e111 of'said arm. The rod 31 is mounted in said hanger and'is independent of ,-said..` arni.v

Thus by. removing# the vhanger -rom ,said i arnnthe entiresupporting means is detached from sposition.

f The base 15 of the device is'sogconstructed that i-t Will fit into"anycylinderaandisfade p of a cylinder bloc-k, a 'horizontal'a'rmpivotally supported at one endo'n the upper end of said.- standard and adjustable inf afhorizonitali plane relativelyto Athe. faXi's-.fthereoifa hangerV suspended from said armi :andi mov:- -able longitudinally thereof, a rodslidably .mounted in said hanger, atension springfopL erativelyconnected at its :endsftosaidhanger and .said rod` to Aprovidemesilien't supporta for the latter7 and aihook mounted` on the lovver -endwo said rod and adaptedxto-` 'detachn ably receive and'4 supportthe 'grindingr'uniu 4 2. Adevice of theclass described .comprising a vertica-lvstandard' :base therefor adapted to lbe inserted and secured Within a cylinderi of a cylinder. block, meansforgex.- :pandingfsaid basem saidf cylinderandr'ender' saidstandalrd immovable, ak member wevolu*- bly and coaxiallymounted -on said standard', Y i

a horizontalv armA iXed at onezend'to said member uand adjustable therewith ".'radia'lly relatively to the axiszof saidistandarci.,I ai two:- part supporting means suspended from said arm,pone. ofY said parts beingi.supportedfbyl said arm andthe otherpartzbeing slidably said spring'being .adjustable relatively 'to one of said parts to regulate 'the 'tensionio-f said spring, and means carried vbyxsaid .-slidable v part for detachablyreceivingfand supporting the .operating unit.'`

mounted lin the first part7 .a .tensionf-fspring Y .anchored at itsv endsto'the respectiveparts, v

3. A device of theclassdescribedzcomprisl ing a vertical standard, abase xed'rto the lower end voit' said standard and .insertable into a cylinder ofa 'cylinder block and adaptiedto bear againsttheeylinder Waldv thereof l at two-spaced points, anexpansion member operatively mounted onsaid base and movable laterally therefrom to engage'the cylinder wall at apoint spaced from the first mentioned points, a horizontal arm fixed to the upper end of ysaid standard, and supporting means suspendedl from said arm and resiliently supporting a cylinder grinder and the actuating mechanism therefor whereby said cylinder Vgrindercan be moved in vertical plane. Y v I Y y v4.- A device of the class described comprising a Vvertical standard, a base therefor adapted to be inserted into a cylinder of a cylinder block', said base being larranged to engage the cylinder wall at two spaced points, a plurality of links pivotally co`nnectedat one kof their ends to said base and extending laterally therefrom, an expansion member pivotally connected to the outer ends of'said links andmovable in parallelism to said base, said member being expansible to 5. A device of the vclass described comprising a vertical standard, a pair of channel members having their upper 'ends'converging and secured to the lower end of said standard andfhavingtheir lower ends arrangedV in spaced parallel relation, a series of horizontally. disposed rods secured-to and extending between-said spaced parallel portions, a plurality'of links pivotally mounted at one of their ends onsaid rodsand extending outwardly therefrom, an expansion member arranged in-parallel relation with and operable v -in aplane central to said spaced parallel portions, said expansion member being` pivotally connected to the outer ends of said links, the upper end of said expansion member being 'provided with a 'hook portion for engaging the top of the cylinder block wher-eby upon the insertion of thev base within the cylinder vand the engagement of the upper end of said expansion member with the/top' of the cylinder block said expansion Vmember and said base are automatically moved away from each other and into engagement with the cylinder wall at a plurality of points,xa horizontal 'arm movably mounted at oneend'on the upper ,end of said standard and'adjustable in aI-horizontal plane about the axisthereof, and means adjustably mounted on said arm for resiliently r supportingthe operating unit above said cylinderV block.

6. A device of the class described comprising a vertical standard, a pair-of channel members-having their upper ends converging Y and secured to the lower end of said standard and having their lower ends-:arranged in spaced parallel relation, a series of4 horizontally. disposed rods secured to and extending betweensaid spaced parallel,portions,-a plue ranged in parallel relation with and operable in a plane central to said spaced parallelportions, said expansion member being pivotally connectedto the outer ends ofsaidllinks,;the

upper end of said expansion-member being provided with a hook portion for. engaging 1 the top of the cylinder blockwhereby upon the insertion ofthe base within the cylinder Y and the engagement of theupperend ofsaid expansion member with the top of the, cylinder block said expansion memberfand said b'ase `are automatically moved'l away from each other and intoengagement with the cylindery wall at a lplurality of points, a horizontal arm. movably mounted at one end on the upper end of said standard and adjustable in a horizontal plane about the axisv thereof, means adjustably mounted onsaid arm'for resiliently supporting the operating unit above said cylinder block, anda manually adjustable ,member operatively connected lto said expansion member forlocking the latter in expanded position. 1

7. ing in combination with a standard, a pair of base members arranged in spacedl vertical relation and having their upper ends converging and secured to the lower end of said-standard, a series of pins transversely: disposed be,-

tween said base members, a plurality of links arrangedl in pairs-,and having `one of their ends pivotallypmounted lon saidpins, an expension member arranged 1n spaced parallel relation with said base members and vpivotal- Y ly connected to the outer lends of 'said links whereby said expansion member-fis movable outwardly inparallelism with` said base members, and aV lateral outwardly, presented projection on the upper endfof saidexpansion member for'engagingthe top of a cylinder when'the base structureis inserted thereinto whereby the base membersand said expansion member are automatically expanded laterally relatively to each other to engage the vcylind-erpwall at a plurality of spaced points.

,8. A device ofthe class described comprisdevice of the class described .comprising in combination with a standard, a pair y of base members arranged in spaced vertical relationl and having-their upper ends converging and ysecured tothe lower end of said standard, a series of `pinstransversely disposed between said basemembers, a plurality Y v of links-arranged in pairs and having one .of

. their ends pivotally mounted on said pins, an

expansion member arranged in spaced parallel relation with said base membersand pivotally` connectedto the outer ends of said links whereby saidexpansion member is movable outwardly inparallelism lwith said base members, a lateral outwardly presented projection 1 'ff said expansion member to lock the latter in' expanded position.

9. A device of the class described comprising in combination with a standard, a pair of base members arranged in spaced vertical relation and having their upper ends converging and secured to the lower end of said standard, a series of pins transversely disposed between said base members, a plurality of links arranged'in pairs and having one of their ends pivotally mounted on said pins, an expansion member arranged in spaced parallel relation with said base members and pivotally connected to the outer ends of said links whereby said expansion member is movable outwardly in parallelism with said base members, a lateral outwardly presented projection on the upper end of said expansion member for engaging the top of a cylinder when the base structure is inserted thereinto whereby the base members and said expansion member are automatically expanded laterally relatively to each other to engage the cylinder wall ata plurality of spaced points, a tension rod extending upwardly through said standard, a link pivotally connecting the lower end or" said rod with said expansion member, and manually operable means cooperating with said standard and with said tension rod for drawing the latter upwardly to lock said expansion member in position.

10. ln a device of the class described, the combination with a standard and an arm extending radially therefrom, of a hanger disposed to one side of said arm and having its upper end slidably resting thereon and provided with a vertically disposed aperture ar-v ranged on the other side of said arm, a vertically disposed rod slidably mounted in said aperture and extending downwardly below said hanger, means for detachably supporting a grinding unit on the lower end of said rod, and a coiled spring on said rod and attached at its upper end to the lower end oi' said hanger anda-t its lower end to said rod y whereby the latter is resiliently supported by said hanger and movable in a vertical plane. i

11. In a grinding support of the class described, a hanger member having its' upper end slida-bly adapted to engage a support arm and to be freely suspended therefrom, a vertically disposed slidable member mount-- ed in said hanger member to one side of said support arm, a coiled spring secured at one end to said hanger belowsaid support arm one or" said members so as to increase or de# crease the tension of said spring, and a hook` mounted on the lower end o said slidablev member and rotatable about a vert-ical axis and adapt-ed to have detachably secured thereto the grinding unit.

l2. A portable grinder stand having a base adapte-d for insertion into a cylinder, said base comprising a pair of supporting elements, spaced links connecting said Velements in movable, parallel relation, and astandard carried by and projecting upwardly from one of said supporting elements.

13. Anl engine cylinder grinder stand comprising a pair of supporting elements, links connecting said elements in movable, spaced relation, means for holding one of saidvelements in relatively fixed position with respect to the cylinder, a standard carried by the other element, said links being arranged to move the standard carrying element into engagement with the cylinder wall on exerting force downwardly on said element.

la. A portable grinder stand having a base adapted for insertion into a cylinder, said base comprising a pair of supporting elements, means connecting said elements and adapted to force-them apart on exerting force downwardly on one of them.

In testimony whereof l hereunto aiix my signature this 25th day of June, 1930.

4 JOSEPH SUNNEN. 

